RV 



LIB 



%\t Cmtarimti mtttowalajbt 



VOL. XXV. 



LONDON, FEBRUARY, 1893. 



No. 2. 



CANADIAN HYMENOPTERA — No. 2. 



BY W. HAGUE HARRINGTON, OTTAWA. 

 COLEOCENTRUS CANADENSIS, n. sp. 



Female. — Length, 20 mm. Black, with red legs. Head transverse, 

 as wide as thorax ; cheeks as wide as eyes ; face slightly swollen below 

 antennae, clothed with short pubescence, and with the inner orbits faintly 

 yellowish below ; palpi and inner edges of mandibles and labrum rufous ; 

 vertex and cheeks polished, the area of the ocelli without noticeable de- 

 pressions or sutures ; antennae long and moderately thick, the joints 

 about forty and subsequal. Thorax polished above ; the lobes of the 

 mesothorax prominent, the central sulcate ; pleurae and pectus rugose 

 or subaciculate, but without definite strife ; scutellum moderately large 

 and elevated ; metathorax with acute carinas ; the area enclosed by the 

 two discal carinas about twice as long as wide ; in the area enclosed by 

 the two lateral carinas the elongate spiracle may be plainly seen almost 

 in centre ; the areas between lateral and discal carinas transversely 

 rugose ; legs slender with robust coxas, entirely rufous with exception of 

 hinder tibias and tarsi, which are somewhat brownish ; wings faintly 

 yellowish, stigma and nervures brown, areolet small, triangular and 

 pedicellate, receiving the recurrent nervure at outer angle. Abdomen 

 sessile, robust, brown rather than black : first segment twice as long as 

 wide, not much expanded posteriorly, faintly sulcate above, with indis- 

 tinct lateral carinas ; remaining segments shorter, subequal, margined at 

 apex (except last) with pale yellow ; the terminal segment compressed 

 and curved so as to partly embrace the ovipositor ; ventral scale very 

 large, partly covering three apical segments ; ovipositor as long as body, 

 piceous, the sheaths piceous black, very finely pubescent. 



Captured at Casselman, about thirty miles south-west from Ottawa, on 

 the 26th June, 1S83. 



